You are conducting a multisite trial for a large pharmaceutical company, one requirement of which is to select a scale that will
consistently provide objective data, on a weekly basis, for depression. You need the scale to be consistent and change gradually only in response to the positive effects of the drug being tested. You need a scale with good:
Reliability is defined as the consistency of a research study or measuring test. A reliable test produces the same repeated results under the same or consistent conditions.
Since one of the criterias is to select a scale that will consistently provide objective data, on a weekly basis, for depression and change gradually only in response to the positive effects of the drug being tested. You need a scale with good reliability.
